ObjXMPP  Changes On Branch trunk

Changes In Branch trunk Excluding Merge-Ins

This is equivalent to a diff from ae703bd9ba to ae703bd9ba

2021-04-29
00:15
heap.zone -> nil.im Leaf check-in: ae703bd9ba user: js tags: trunk
00:14
Avoid string duplication check-in: b31637cfd1 user: js tags: trunk